ICD-10-CM > S00-T88 > S50-S59 > S55 > S55.8 > S55.80 S55.80 Unspecified injury of other blood vessels at forearm level Non-Billable/Non-Specific Codes S55.801Unspecified injury of other blood vessels at forearm level, right armS55.801A..., initial encounterS55.801D..., subsequent encounterS55.801S..., sequelaS55.802Unspecified injury of other blood vessels at forearm level, left armS55.802A..., initial encounterS55.802D..., subsequent encounterS55.802S..., sequelaS55.809Unspecified injury of other blood vessels at forearm level, unspecified armS55.809A..., initial encounterS55.809D..., subsequent encounterS55.809S..., sequela